Our Arranged Marriage

After Inko died, Izukus father noticed how depressed he was, he tried everything to make his son happy, along with his older brother Tomura. One day Izukus father was doing a business report when he received a phone call from none other than Endeavor. Endeavor wanted to have an arranged marriage between his eldest son Touya, also known as Dabi, and Izuku. Izukus father thought about it and agreed, Inko had agreed with this also before her passing.

When the two meet will they get along or will they be scared to fall for each other?

What will happen to Izuku when he is at UA?

How will the Todoroki family react when they find out about having a new brother/son and that the oldest is still alive?

Dabi is not aged down.
He is 21 till chapter 13 then 22 (there is a comment about him being 22 but it was close to his birthday)

It's not illegal. Don't like it don't read it.

Japans age of consent is 13, America's age of consent is 16. Deku will be 16 at the start and will turn 17, also this is legal due to both parties parents agreeing and signing documents for this. Like I said, don't like don't read it.